Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs

Autores
Zilli, Dario Adrian; Bonelli, Pablo Ricardo; Gommes, C. J.; Blacher, S.; Pirard, J. P.; Cukierman, Ana Lea
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Multi-walled carbon nanotubes (CNTs), pristine and subjected to treatments, are comparatively characterized from N2 and Kr (77 K) adsorption measurements. The CNTs are lab-synthesized by in situ chemical vapour deposition of an iron-based organometallic compound at 895 °C. The treatments applied to the CNTs include low temperature gas-phase oxidation, mild temperature annealing and ultrasonic dispersion in ethanol, in an attempt to examine possible changes in adsorption characteristics. N2 and Kr adsorption measurements give rise to steadily increasing and stepped isotherms, respectively. The former are representative of a multilayer adsorption phenomenon, while the latter indicate successive monolayer condensation. The treatments affect differently gas adsorption capacities of the CNTs. Oxidation leads to CNTs with higher BET specific surface area and increased adsorption capacity, though the effect is more pronounced for Kr adsorption. Ultrasonic dispersion of the CNT brings about a significant reduction only in N2 adsorption capacity. Modifications in the characteristic steps in Kr adsorption isotherms of the CNTs subjected to annealing can be appreciated, although no remarkable changes are observed in N2 adsorption isotherms. Present results demonstrate that determination of Kr adsorption isotherms represents a more suitable tool to obtain a more reliable textural characterization of CNTs than does N2 adsorption.
Fil: Zilli, Dario Adrian. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bonelli, Pablo Ricardo. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gommes, C. J.. Université de Liège; Bélgica
Fil: Blacher, S.. Université de Liège; Bélgica
Fil: Pirard, J. P.. Université de Liège; Bélgica
Fil: Cukierman, Ana Lea. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Carbon Nanotubes
Purification Treatments
Krypton Adsorption
Surface Characteristics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/68142
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTsZilli, Dario AdrianBonelli, Pablo RicardoGommes, C. J.Blacher, S.Pirard, J. P.Cukierman, Ana LeaCarbon NanotubesPurification TreatmentsKrypton AdsorptionSurface Characteristicshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Multi-walled carbon nanotubes (CNTs), pristine and subjected to treatments, are comparatively characterized from N2 and Kr (77 K) adsorption measurements. The CNTs are lab-synthesized by in situ chemical vapour deposition of an iron-based organometallic compound at 895 °C. The treatments applied to the CNTs include low temperature gas-phase oxidation, mild temperature annealing and ultrasonic dispersion in ethanol, in an attempt to examine possible changes in adsorption characteristics. N2 and Kr adsorption measurements give rise to steadily increasing and stepped isotherms, respectively. The former are representative of a multilayer adsorption phenomenon, while the latter indicate successive monolayer condensation. The treatments affect differently gas adsorption capacities of the CNTs. Oxidation leads to CNTs with higher BET specific surface area and increased adsorption capacity, though the effect is more pronounced for Kr adsorption. Ultrasonic dispersion of the CNT brings about a significant reduction only in N2 adsorption capacity. Modifications in the characteristic steps in Kr adsorption isotherms of the CNTs subjected to annealing can be appreciated, although no remarkable changes are observed in N2 adsorption isotherms. Present results demonstrate that determination of Kr adsorption isotherms represents a more suitable tool to obtain a more reliable textural characterization of CNTs than does N2 adsorption.Fil: Zilli, Dario Adrian. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bonelli, Pablo Ricardo. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gommes, C. J.. Université de Liège; BélgicaFil: Blacher, S.. Université de Liège; BélgicaFil: Pirard, J. P.. Université de Liège; BélgicaFil: Cukierman, Ana Lea. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaPergamon-Elsevier Science Ltd2011-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68142Zilli, Dario Adrian; Bonelli, Pablo Ricardo; Gommes, C. J.; Blacher, S.; Pirard, J. P.; et al.; Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs; Pergamon-Elsevier Science Ltd; Carbon; 49; 3; 3-2011; 980-9850008-6223CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.carbon.2010.09.065info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0008622310007955info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:16Zoai:ri.conicet.gov.ar:11336/68142instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:43:17.211CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
title Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
spellingShingle Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
Zilli, Dario Adrian
Carbon Nanotubes
Purification Treatments
Krypton Adsorption
Surface Characteristics
title_short Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
title_full Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
title_fullStr Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
title_full_unstemmed Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
title_sort Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs
dc.creator.none.fl_str_mv Zilli, Dario Adrian
Bonelli, Pablo Ricardo
Gommes, C. J.
Blacher, S.
Pirard, J. P.
Cukierman, Ana Lea
author Zilli, Dario Adrian
author_facet Zilli, Dario Adrian
Bonelli, Pablo Ricardo
Gommes, C. J.
Blacher, S.
Pirard, J. P.
Cukierman, Ana Lea
author_role author
author2 Bonelli, Pablo Ricardo
Gommes, C. J.
Blacher, S.
Pirard, J. P.
Cukierman, Ana Lea
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Carbon Nanotubes
Purification Treatments
Krypton Adsorption
Surface Characteristics
topic Carbon Nanotubes
Purification Treatments
Krypton Adsorption
Surface Characteristics
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Multi-walled carbon nanotubes (CNTs), pristine and subjected to treatments, are comparatively characterized from N2 and Kr (77 K) adsorption measurements. The CNTs are lab-synthesized by in situ chemical vapour deposition of an iron-based organometallic compound at 895 °C. The treatments applied to the CNTs include low temperature gas-phase oxidation, mild temperature annealing and ultrasonic dispersion in ethanol, in an attempt to examine possible changes in adsorption characteristics. N2 and Kr adsorption measurements give rise to steadily increasing and stepped isotherms, respectively. The former are representative of a multilayer adsorption phenomenon, while the latter indicate successive monolayer condensation. The treatments affect differently gas adsorption capacities of the CNTs. Oxidation leads to CNTs with higher BET specific surface area and increased adsorption capacity, though the effect is more pronounced for Kr adsorption. Ultrasonic dispersion of the CNT brings about a significant reduction only in N2 adsorption capacity. Modifications in the characteristic steps in Kr adsorption isotherms of the CNTs subjected to annealing can be appreciated, although no remarkable changes are observed in N2 adsorption isotherms. Present results demonstrate that determination of Kr adsorption isotherms represents a more suitable tool to obtain a more reliable textural characterization of CNTs than does N2 adsorption.
Fil: Zilli, Dario Adrian. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bonelli, Pablo Ricardo. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gommes, C. J.. Université de Liège; Bélgica
Fil: Blacher, S.. Université de Liège; Bélgica
Fil: Pirard, J. P.. Université de Liège; Bélgica
Fil: Cukierman, Ana Lea. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Multi-walled carbon nanotubes (CNTs), pristine and subjected to treatments, are comparatively characterized from N2 and Kr (77 K) adsorption measurements. The CNTs are lab-synthesized by in situ chemical vapour deposition of an iron-based organometallic compound at 895 °C. The treatments applied to the CNTs include low temperature gas-phase oxidation, mild temperature annealing and ultrasonic dispersion in ethanol, in an attempt to examine possible changes in adsorption characteristics. N2 and Kr adsorption measurements give rise to steadily increasing and stepped isotherms, respectively. The former are representative of a multilayer adsorption phenomenon, while the latter indicate successive monolayer condensation. The treatments affect differently gas adsorption capacities of the CNTs. Oxidation leads to CNTs with higher BET specific surface area and increased adsorption capacity, though the effect is more pronounced for Kr adsorption. Ultrasonic dispersion of the CNT brings about a significant reduction only in N2 adsorption capacity. Modifications in the characteristic steps in Kr adsorption isotherms of the CNTs subjected to annealing can be appreciated, although no remarkable changes are observed in N2 adsorption isotherms. Present results demonstrate that determination of Kr adsorption isotherms represents a more suitable tool to obtain a more reliable textural characterization of CNTs than does N2 adsorption.
publishDate 2011
dc.date.none.fl_str_mv 2011-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/68142
Zilli, Dario Adrian; Bonelli, Pablo Ricardo; Gommes, C. J.; Blacher, S.; Pirard, J. P.; et al.; Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs; Pergamon-Elsevier Science Ltd; Carbon; 49; 3; 3-2011; 980-985
0008-6223
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68142
identifier_str_mv Zilli, Dario Adrian; Bonelli, Pablo Ricardo; Gommes, C. J.; Blacher, S.; Pirard, J. P.; et al.; Krypton adsorption as a suitable tool for surface characterization of multi-walled CNTs; Pergamon-Elsevier Science Ltd; Carbon; 49; 3; 3-2011; 980-985
0008-6223
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.carbon.2010.09.065
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0008622310007955
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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